net.xoetrope.xui
Class XPathEvaluator

java.lang.Object
  net.xoetrope.xui.XPathEvaluator

public class XPathEvaluator
extends java.lang.Object

A class used by XPage to implement its evaluation of paths

Copyright (c) Xoetrope Ltd., 2002-2004

License: see license.txt

$Revision: 1.1 $

Field Summary

protected XProject	currentProject The project to which this object belongs
protected XDefaultAttributeEvaluator	evaluator The default attribute expression evaluator
protected PageSupport	ownerPage The enclosing context

Constructor Summary

XPathEvaluator(XProject project, PageSupport page)
Creates a new instance of XPathEvaluator

Method Summary

java.lang.Object	evaluateAttribute(java.lang.String attribValue) Evaluates an attribute value.
java.lang.String	evaluatePath(java.lang.String path) Evaluates a path (potentially) containing a method call
java.lang.String	stripAttributeValues(java.lang.String path) Remove the attribute paths from a path e.g. remove @value=ignore

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

evaluator

protected XDefaultAttributeEvaluator evaluator

The default attribute expression evaluator

ownerPage

protected PageSupport ownerPage

The enclosing context

currentProject

protected XProject currentProject

The project to which this object belongs

Constructor Detail

XPathEvaluator

public XPathEvaluator(XProject project,
                      PageSupport page)

Creates a new instance of XPathEvaluator

Parameters:

project - the owner project

page - the enclosing context

Method Detail

evaluateAttribute

public java.lang.Object evaluateAttribute(java.lang.String attribValue)

Evaluates an attribute value. An attribute may be a value or a method call. If brackets are part of the value it is assumed that a method call is intended. The method call is indicated by the '$' symbol e.g. ${myMethod()}

Parameters:

attribValue - the raw attribute value

Returns:

the evaluated attribute

evaluatePath

public java.lang.String evaluatePath(java.lang.String path)

Evaluates a path (potentially) containing a method call

Parameters:

path - the raw path

Returns:

the evaluated path

stripAttributeValues

public java.lang.String stripAttributeValues(java.lang.String path)

Remove the attribute paths from a path e.g. remove @value=ignore

Parameters:

path - the path to strip

Returns:

the stripped path